Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4939969 | Acoustic keyboard musical instrument | Rokurota Mantani, Masatosi Murayama, Toshihiro Nishino | 1990-07-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4939969 | Acoustic keyboard musical instrument | Rokurota Mantani, Masatosi Murayama, Toshihiro Nishino | 1990-07-10 |